EPA Front Catalytic Converter Set compatible for Cadillac SRX 3.6L V6 2012-2016 400CPSI
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2.5 Cast Iron Exhaust Manifold Turbo ForGMC compatible for Sierra 1500 1999-2013 4.8L 5.3L
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Vapor Canister compatible for Infiniti JX35 2013 compatible for Nissan Murano 2015 149507Y000
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Vapor Canister compatible for Infiniti JX35 2013 compatible for Nissan Murano 2015 149507Y000
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Secondary Air Injection Pump compatible for Chevy S10 compatible for Buick LeSabre compatible for Pontiac Olds 00-03
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Air Switching Valve compatible for Toyota 4runner 2010 compatible for Tacoma 05-21 25710-75012
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Downstream Nox Sensor compatible for Volkswagen Touareg TDI 2009-2016 compatible for Audi Q7 TDI 2009-2010
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Exhaust Tips / Bezels compatible for Chevy Silverado 1500 compatible for GMC Sierra 1500 2019-2024
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Cast Iron Turbo Manifold Header Exhaust compatible for Honda Civic 1.7L I4 2001-2005
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Exhaust Tips / Bezels compatible for Chevy Silverado 1500 compatible for GMC Sierra 1500 2019-2024
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Secondary Air Injection Check Valve compatible for Volkswagen Passat 2011-14 Jetta 2005-14
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Bank2 Catalytic Converter compatible for Honda Ridgeline Odyssey 3.5L 05-07 w/ Heat Shield
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Cast Iron Turbo Manifold compatible for Honda Civic 1988-2000 B16/B18/B20 compatible for Honda B-Series
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Exhaust Upgrades: Sound, Flow and Staying Legal
Written by the PickupChain team · Last reviewed October 17, 2026
Most truck exhaust upgrades are about sound and a small gain in flow. Axle-back systems replace only the muffler and tips and are the simplest. Cat-back systems replace everything behind the catalytic converter and give a bigger change in sound and flow.
Emissions parts are a different matter. Catalytic converters, diesel particulate filters and EGR systems are required by federal law on road vehicles. Removing them is illegal for street use in all 50 states and can fail inspection. Only buy emissions parts that are listed as legal replacements for your state.
California and states that follow CARB rules require an Executive Order (EO) number for many aftermarket parts. Look for CARB-legal labels if you live there.
Frequently Asked Questions
+Cat-back or axle-back exhaust?
Axle-back systems are cheaper, quicker to install and mainly change the sound. Cat-back systems replace more piping, change sound and flow more noticeably and often add a little power.
+Will a new exhaust cause drone on the highway?
Some aggressive systems produce a low hum at cruising speed called drone. Look for systems with resonators or descriptions that mention reduced drone if you drive long distances.
+Do I need a tune after an exhaust upgrade?
A cat-back or axle-back exhaust does not require a tune. Headers and downpipes often do, and they may affect emissions compliance.